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Lab 32

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Lab 32 Blood Vessels Vessels - Generalities Peripheral distributions are the same on the left and right side of the body except near the heart. Most arteries and ... – PowerPoint PPT presentation

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Title: Lab 32


1
Lab 32
  • Blood Vessels

2
Vessels - Generalities
  • Peripheral distributions are the same on the left
    and right side of the body except near the heart.
  • Most arteries and veins follow similar paths and
    are often similarly named
  • One vessel can have several names (like a street)
  • Many tissues are serviced by several arteries and
    veins

3
Veins - Generalities
  • Veins are far more variable from person ot person
    than arteries
  • Several veins, especially in the limbs, have
    superficial and deep routes. Superficial route
    usually only caries 10-15 of blood at a maximum
    and serves to aid in thermoregulation

4
Vessels to know
  • Be able to identify the following arteries/veins
    on a model inferior and superior vena cava, left
    and right pulmonary arteries and veins,, common
    carotid, subclavian, brachiocephalic, coronary
  • thoracic and abdominal aorta, celiac, renal,
    axillary, brachial, radial, ulnar, mesenteric,
    iliac, peroneal, femoral, popliteal, tibial,
    jugular, celiac, splenic, gastric, hepatic and
    saphenous.

5
(No Transcript)
6
Major Systemic Arteries
Figure 21-20
7
Branches of the Aortic Arch
  • Deliver blood to head and neck
  • brachiocephalic trunk
  • right subclavian artery
  • right common carotid artery
  • left common carotid artery
  • left subclavian artery

8
Arteries of Upper Limbs
Subclavian ? axial ? brachial ? splits into
radial, ulnar
3D Peel Away
9
Descending aorta? thoracic aorta ? abdominal
aorta ? common illiac ? to be continued
renal
10
3 Unpaired Branches of the Abdominal Aorta
  • Celiac trunk, divides into
  • left gastric artery
  • splenic artery
  • common hepatic artery
  • Superior mesenteric artery
  • Left mesenteric artery

11
celiac
gastric
hepatic
splenic
mesenteric
iliac
12
Illiac ? femoral ? popliteal? Posterior and
anterior tibial.
Posteror tibial gives rise to peroneal (fibular)
13
Veins
  • Know the veins with the same names as arteries
  • Exceptions
  • saphenous (leg) no comparable artery
  • jugular (neck) like carotid arteries

14
Lab 32
  • Look at 3 slides
  • Artery
  • Vein
  • Aorta
  • For arteries, veins, and aorta, label the three
    layers and answer the questions
  • Look at models and diagrams to identify vessels
    for the practical exam

15
Artery or Vein?
  • Arteries have high numbers of elastic fibers,
    which causes them to recoil when at low pressure
    (or empty). Causes
  • folded or ridged endothelium (since it cannot
    contract)
  • constricted lumen (but appears round)
  • Veins do not constrict like this and they are
    less resiliant so they collapse in section.
    Causes
  • smooth, unfolded endothelium.
  • lumens look flattened and oblong
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